Feeding mechanism



Sept. 22, 1931.

F. ASHWORTH FEEDING MECHANISM Original Filed May 19, 1920 3 Sheets-Sheet1 Sept. 22, 1931. s wo 1,824,064

FEEDING MECHANISM Original Filed ma 19, 1920 s Sheets-Sheet 2Sept.22,1931. F. ASHWbRTH 1,824,064

FEEDING MECHANI S M Original Filed May 19, 1920 s Sheets-Sheet 3Patented Sept. 22, 1931 STATES FRED ASHWORTI-I, OF BEVERLY,MASSACHUSETTS, ASSIGrITOlR. TO UNITED SHOE ML.-

GI-IINERY CORPORATION, OF PATTERSON, NEW JERSEY, A CORPORATION OF NEWJERSEY FEEDING MECHANISM Original application filed. May 19, 1920,Serial No. 382,558. Divided and this application filed November 23,

The object of the lnvention is to simplify and improve the constructionand mode of support and presser through the work.

A on the work support.

operation of feeding mechanism for sewing machines and more particularlyto improve the construction and arrangement of the parts which move thework feeding devices in the line of feed. The several features of theinvention are designed primarly for use in look stitch outsole shoesewing machines and are herein illustrated and described as embodied inthe lock stitch outsole shoe sewing machine fully disclosed inapplicants pending application Serial No. 382,558, filed May 19, 1920,of which the present application is a division;

In the drawings illustrating tion to beunderstood, Fig. 1 is a rightside elevation of the head portion of the machine; Figs. 2 and 8 aresectional plan views taken on the lines 2-2 and 3 -3 respectively ofFig- 1;*and'Fig. 4 is a detail sectional view of a portion of the workfeeding mechanism taken on theline 4- 1; of Fig. 2,.

In the sewing machine-illustrated in the drawings, the work is fed bymeans of a work foot while the needle and awl are out of the work. Atthe completion of the feeding operation the awl'is actuated to piercethe work and as the awl retracts the needle closely follows the awlDuring the feeding operation and during the described movements of theawl and needle, the work is firmly clamped on the work support by thepresser foot. At the limit of the work piercing stroke of the needle,the pressure of the presser foot on the work is relieved and the presserfoot and work support are returned to their initial position whereuponthe presser foot is again caused to clamp the work firmly As the needleis in the work during the back feeding or retraction of the work'supportand presser foot, there is no danger of the work becoming dislodged bythe work support and presser foot being dragged over the work, andtheneedle is supported at this time a sufiicient portion of the machine toenable the lnven-' Serial No. 676,535. Renewed February 10, '1931.

by the needle guide which is advanced to a position in engagement withthe work. When the work support and presser foot have been retracted andthe presser foot is caused to clamp the work on the work support, the

loop drawing stroke of the needle is initiated. The construction of thework support and presser foot and their actuating mechanism is such thatthere is no danger of any back lash occurring even when thesepartsibecome worn with use. The feeding of the work by means of the worksupport and presser foot perm-its the awl and needle to be inalinementat all times so that there is no danger of the needle failingto accurately enter the hole made by the awl as frequently occurs inmachines in which the awl is employed to feed "the work.

7 The work support is indicated at 2 and the presserfoot is indicated at4: (Figs. 1 and 3). The work support is shaped as usual to enter thecrease between the welt and the upper and to cooperate with an edge gage6 to guide the work. The work sup 7 port is provided with the usual slot8 through which the needle and awl work and through which a fudge orchannel knife 10 for the welt extends. The work support is centrallyformer on a curved bar 12, the ends of which are secured to arms 1 fprojecting forwardly from a work support carrier-16. The arms 1& arespaced a distance apart to permit the looper 20 and parts of theactuating mechanisms for the needle and awl to operate between them.

In order that the work support may be actuated to feed the work, thecarrier 16 is pivotally mounted ona vertical pin 22 supported by theframe of the machine and spaced at a distance from the end of the worksupport. The forward end of the carrier 16 is sup-- ported by meansvided with a flattened surface with which flattened surfaces formed onthe under sides of the arms 14 are in sliding engagement. In order tomove the presser foot 4 laterally with the work support to feedthe'work, it is formed on the end of a lever 26 which is pivotallymounted on an upright bracket 28 projecting from one of the arms 14.

of a bracket 24 that is proengages a groove 36 in a relativelyfixedblock 38, the groove 36 being at anan le to the groove 34. lViththis construction, it will be understood that by actuating the pivot pin32 to move the blocks 30 longitudinally of the grooves a lateral feedingmovement will be imparted to the worksupport and presser foot. Thepivotpin'32 is actuated to impart the desired feeding move ments to thework support and presser foot by means of a link 40 on the forward endof which the pivot pin is formed. The rear end of the link 40 ispivotally connected to an arm 41 secured to the upper end of a verticalrock shaft 42 mounted in the frame. An arm 43 is securedto the lower endof the rock shaft 42 andis provided 'ith a cam roll which engages agroove in a cam disk 253 44 carried by a driving shaft 46 of themachine.

In order to adjust the length of the feed. the grooved block 38 isadjustable to vary the relative angular positions of the grooves 34 303and 36. The block 38, is pivotally mounted by means of a stud 48projectingfromthe top thereof engaging a socket bearing in the frame ofthe machine, and its rear endis pivotally connected to the bifurcatedend 35;? of a sleeve 50. The other end of the sleeve as? rock shaft 64mounted in the frame.

50 is split and embraces the-rear end ofa rod 52, the sleeve beingsecurely clamped to the rod by means of abolt 54. The rod 52 isscrew-threaded through a sleeve 56 mounted i} toturn in a bearing in theframe'and held fromlongitudinal movement by nuts 58 threaded on itsinner end and by a pinion 60 secured to its forward end. Byturning thesleeve 56, the block '38 may be adjusted to 452 vary the length of thefeed. In order that the operator may conveniently effect such adjustmentof the block 38, the sleeve is adapted to be turned by means of a handlever 62 .secured to the right hand end of a The connection between thesleeve 56 and the hand lever 62 comprises a gear segment 66 engaging thepinion 60, which gear segment is formed on the end of an arm secured toithe rock shaft 64. Thegrooved block 38 is adapted to be adjustedindependently of the hand lever 62 to vary the length of the feed. Thismay be accomplished by loosening the clamping'bolt 54 and turning therod 52 in at the sleeve 56, a screw-driver slot being provided in theend of the rod for this purpose. The invention having been thus,described, what is claimed is i i i "l. A: sewing, machine having, incombina- Ition, stitch forming devices, work feeding means comprising alaterally movable work support, a presser foot cooperating therewith,and means for moving the work support laterally to feed the workcomprising a member having a groove, a block moving back and forthlengthwise in said groove,

'means for moving said carrier to feed the work comprising areciprocating member, a pair of blocks actuated by said reciprocatingmember, one of the block being mounted to slide in the groove in thecarrier, and a memher having a groove extending angularly to he groovein the carrier and engaged by the other block.

3. A sewing machine having, in combination, work feeding meanscomprising a laterally movable work support having a groove, a presserfoot cooperating with the work support, and means for moving the worksupport to feed the work comprising a reciprocating member, a pair ofblocks actuated by the reciprocating member, one of the blocks beingmounted to slide in the groove in the work support, a guiding memberhaving a groove extending angularly to the groove in the work supportand engaged by the other block, and means for adjusting the guidingmember to vary the angular position of its groove. 7

4. A sewing machine having, in combination, work feeding meanscomprising a laterally movable work support having a groove,

a presser foot cooperating with the work support,.and means for movingthe work support to feed the work comprising a reciprocating member, apair of blocks actuated by the reciprocating member, one of the blocksbeing mounted to slide in the groove in the work support, and a guidingmember having a groove extending angularly to the groove in the worksupport and engaged by the other block.

5. A sewing machine having, in combination, work feeding meanscomprising a pivotally mounted work support, a presser foot cooperatingtherewith, and means for moving the work support laterally about itspivotto feed the work comprising a member havin a groove inclined to theradius of the work support, a block working lengthwise in said groove,and connections between said block and work support for transmitting thelengthwise movement of the block to the work support. a

6. A sewing machine having, in combination, work feeding meanscomprising a pivotally mounted work support, a presser foot cooperatingtherewith, means for moving the work support about its pivot to feed thework comprising a member having a groove inclined to the radius of thework support, a block working lengthwise in said groove, and connectionsbetween said block and work support, and means for adjusting saidgrooved member to vary the inclination of its groove relatively to theradius of the work support.

7. A sewing machine having, in combination, work feeding meanscomprising a pivotally mounted work support, a presser foot cooperatingtherewith, means for moving the work support about its pivot to feed thework comprising amember having a groove inclined to the radius of thework support, a block working lengthwise in said groove, connectionsbetween said block and work support, a manually operable lever, andconnections between the lever and said grooved member to vary theinclination of said groove relatively to the radius of the work supportupon movement of the lever.

8. A sewing machine having, in combination, work feeding meanscomprising a pivotally mounted work support, a presser foot cooperatingtherewith, means for moving the work support about its pivot to feed thework comprising a member having a groove inclined to the radius of thework support, a block working lengthwise in said groove, connectionsbetween said block and work support, a manually operable lever, andconnections between the lever and said grooved member to vary theinclination of said groove relatively to the radius of the work supportupon movement of the lever, the connection between the lever and saidgrooved member having provision for adjustment to vary said inclinationof said groove independently of the lever.

9. A sewing machine having, in combination, stitch forming devices, workfeeding means comprising a laterally movable carrier having a groove, astationary member having a groove set at an angle to the groove in thecarrier, means engaging both grooves, and mechanism acting automaticallyduring each stitch forming cycle of the machine to reciprocate saidmeans in the grooves. to move the carrier laterally to feed the work.

10. A sewing machine having, in combination, work feeding meanscomprising a work support, a carrier for the work support pivotallymounted to permit a feeding movement of the work support, a presser footcooperating therewith,a support for the carrier intermediate the pivotand the work support on which the carrier slides. and means forimparting a swinging movement to the carrier about its pivot to feed thework.

11. A sewing machine having, in combination, work feeding meanscomprising a Work support, a carrier for the work support pivotallymounted to permit a feeding movement of the work support, a presser footmounted on the carrier to cooperate with the work support, and a supportfor the carrier intermediate the pivot and the work support on which thecarrier slides.

FRED ASHVORTH.

